baber/WOPTO huggingface dataset:
Patent GB-574009-A (GB)
Title: Improvements in or relating to electron discharge devices employing hollow resonators
IPC: H01J25/10
Filed: 1941-06-21
Abstract: 574,009. Electron oscillators. BULL, C. S. June 21, 1941, No. 7853. [Class 39 (i)] In high-frequency electron discharge devices, the cathode 7 is embraced by and coupled for high-frequency oscillations through a capacity 7<1> to a hollow resonator 9 incorporating the control electrode, which may be in the form of a grid 10. Signals are fed to the resonator by a loop 12, and, in order to reduce or substantially neutralize the noise produced by the passage of the electrons through the resonator 10, a second resonator 11, arranged about the path of the electrons from the grid to the anode 8, is degeneratively coupled to the first resonator by reversed loop 13. The resonators may have a common wall, or may be insulated from one another as in Fig. 6 for different applied D.C. potentials. In addition, the resonator may be formed of two parts 11a, 11b provided with peripheral flanges 19 with suitable dielectric between. The aperture in the portion 11b may have a screen grid 20, and that in the portion 11a a suppressor grid 21.
Patent GB-634623-A (GB)
Title: Improvements in and connected with key-locked fastenings for attache cases and the like
IPC: E05B65/50
Filed: 1948-03-17
Abstract: 634,623. Hasp locks. CHENEY & SON, Ltd., C. W., and CHENEY, C. W. March 17, 1948, No. 7925. [Class 44] In a modification of the lock claimed in Specification 575,304, the disc type ward plates are replaced by a gated ward member secured on the bolt at rightangles thereto and contained in the bolt operating knob. The ward member consists of a pressing 22 riveted to the bolt plate 3 and provided with slots 21 through which parts of the key bit pass to cooperate with projections 20 on the locking tumbler 4. The ward member is riveted to the bolt plate in a position adjacent the key hole 8 formed in a plate 7 revolubly carried in the knob 5. Specification 622,521 is referred to in Provisional Specification.
Patent GB-747803-A (GB)
Title: Improvements in or relating to electric oscillation generators embodying a semi-conductor device
Inventor: BREWSTER ARTHUR EDWARD
IPC: H03L5/00
Filed: 1954-03-19
Abstract: 747,803. Transistor oscillators. STANDARD TELEPHONES & CABLES, Ltd. March 19, 1954, No. 8107/54. Class 40 (6). In an oscillator, feed-back is effected over a frequency determining device such as a series resonant circuit, an impedance transformation being effected between the device and the emitter or collector circuit, one of which includes a parallel resonant circuit. A series resonant circuit 5, 6, Fig. 2, is tapped down the inductor 14 in the parallel resonant circuit 14, 15 in the collector lead, both being tuned to the desired frequency. Feed-back is applied to the emitter 2 which is provided with feed resistors 8, 23. A chain comprising resistor 26, inductor 25 and thermistor 24 is arranged so that rectifier 27 is biased off in the absence of oscillation. Due to the feed from winding 28 in the output transformer the generated oscillations cause the resistance of thermistor 24 to fall, the junction of 25, 26 falling in potential until rectifier 27 conducts to shunt away the emitter current and thus stabilizes the oscillator amplitude. The resistor 26 and rectifier 27 may be omitted when a transistor of sufficient gain is employed. In a modification, Fig. 3, the feed-back is effected over a piezo-electric crystal 30 to a tap on the potentiometer 31 in the emitter circuit. To prevent distortion of the sine-wave, switch 38 is closed and switch 34 opened and the contact on potentiometer 31 is moved away from the emitter until the output indicated by meter 37 starts to fall. The switches 34, 38 are then reversed, resistor 33 and thermistor 24 acting as a load to stabilize the amplitude. The components 24, 33 are so chosen that the voltage across them is substantially independent of the current flowing through them over the useful range. In a further modification, Fig. 4, the emitter is tapped down the input tuned circuit 9, 10, the crystal 30 being connected directly to the collector. Junction transistors may also be employed. Reference has been directed by the Comptroller to Specifications 700,239 and 700,240.
Patent GB-1135750-A (GB)
Title: Safety device for a conveyor belt
IPC: B65G43/02
Filed: 1967-02-21
Abstract: 1,135,750. Endless conveyers. BETEILIGUNGS - UND PATENTVERWALTUNGS G.m.b.H. 21 Feb., 1967 [22 Feb., 1966], No. 8129/67. Heading B8A. A sharp body in the load passing from a feed hopper 2 on to a conveyer belt 1 which penetrates the belt, engages between supporting rollers 3, 4 and thereby deflects cables 8, 8. These act against springs 13 (which may be pre-tensioned) to operate switches 10, 10, to stop the belt 1. The switches 10, 10, may operate with a time delay. The springs 13, 13, may be replaced by weights, or by bars which fracture under a pre-determined load. There may be sets of different numbers of rollers instead of the triple sets 4, 3, 4, as shown. The cables 8 may be joined by a yoke to a single spring 13.
Patent GB-452313-A (GB)
Title: Improvements in or relating to tents or the like and more particularly but not essentially to means for protecting motor vehicles
IPC: E04H6/00
Filed: 1935-03-15
Abstract: 452,313. Tents or awnings. NEITHERCOTT, F. W., Denham, Elms Road, Harrow Weald, Middlesex. March 15, 1935, No. 8163. [Class 20 (i)] A tent or awning comprises the combination of a canopy adapted to be suspended, and a lateral screen depending from the canopy and adapted to be drawn up and collapsed within the canopy. The canopy 1 is adapted to be suspended by means of a hook 2 and the lateral screen 4 is supported from a plate 3 through which the operating cords 7 pass. The canopy is provided with drums 8 and shafts 10 for each side of the canopy and these may be interconnected so that they can be rotated from a common driver. To ensure that the base of the screen shall remain horizontal during lifting and lowering the drums 9 on which the shorter cords 7 are wound are of less diameter than the drums 8 carrying the longer cords. The lateral screen may be attached directly to the canopy.
Patent GB-364935-A (GB)
Title: Improvements in typewriting machines
IPC: B41J29/56
Filed: 1931-03-17
Abstract: 364,935. Typewriters. ROYALTYPEWRITER CO., Inc., 2, Park Avenue, New York, U.S.A.-(Assignees of Graepel, W.; 514, Fairview Avenue, Ridgewood, New York, U.S.A.) March 17, 1931, No. 8216. Convention date, April 1, 1930. [Class 100 (iv).] Paper-carriages; carriage-releasing arrangements.-Shipping-locks for preventing vertical and horizontal movement of the carriage in machines having carriage-shift mechanism comprise a releasable hook-member for engaging the platen shaft and the bottom of the framework, and a pin adapted to enter holes in the fixed and movable carriage-rails. The machine shown in the Figure comprises a carriage C mounted on a shift frame B and provided with a feed-rack 18 which co-operates with a pinion 17 and can be disengaged by means of finger-levers 20. To condition the machine for shipping, the carriage is centred, and the carriage and the shift frame are raised to relieve the shift-mechanism, shouldered blocks 27 being placed between the carriage and the top 21 of the framework A to hold the ,parts in raised position. Vertical movement of the carriage is prevented by applying locking- members E having hooks 25, 24 for engaging the platen shaft 10 and the bottom 22 of the framework. The members may have hooks 26 for engaging the finger-levers 20 to hold disengaged the feed-rack. Horizontal movement of the carriage is prevented by means of a U-shaped locking-member F having short and long pins 34, 35 adapted to be passed through holes in the fixed and movable carriage-rails 8, 7. The locking-member embraces the carriage-stop D and the pin 34 is formed with a retaining-bend. A tag is attached by a cord to the locking-member. '
Patent GB-469200-A (GB)
Title: Improved convertible bed-settee
IPC: A47C17/16
Filed: 1936-03-19
Abstract: 469,200. Bed - settees. GItIFFITI1S, G. D. March 19, 1936, No. 8220. [Class 52 (ii)] A bed-settee comprises a box-like support 1, a lid 10 hinged to one edge of the support 1 and carrying a number of battens 8 which pass through slots in the lid and are pivotally attached thereto and form the frame of the settee back 11. The lower ends of the battens normally engage in holes in the bottom of the support 1, but are released therefrom on raising the lid 10, so that the back falls into the plane of the lid, forming a bed surface. The battens 8 are located between battens 6 attached to the underside of the lid. A mattress hinged longitudinally along its centre line forms the seat cushion and back cushion of the settee.
Patent GB-835733-A (GB)
Title: Process for the production of aromatic polycarboxylic acids
IPC: C07C51/265
Filed: 1956-03-16
Abstract: Process for producing an aromatic polycarboxylic acid comprises reacting in the liquid phase an aromatic compound having two or more aliphatic nuclear substituents oxidizable to carboxyl groups or an intermediate oxidation product thereof, with molecular oxygen in the presence of a catalyst comprising in conjoint presence bromine and a heavy metal oxidation catalyst selected from vanadium, chromium, molybdenum, tungsten, tin and heavy metals having atomic numbers of 57 to 71 inclusive.  The starting materials, reaction conditions and end-products are those described in the parent Specification.  In examples catalysts prepared by mixing cerium hydroxide, tungstic acid, ammonium molybdate, ammonium metavanadate and chromic acid, ammonium chromate or dibutyl stannic oxide with ammonium bromide and hydrobromic acid and evaporating to dryness are used in the oxidation of para-xylene to terephthalic acid.
Patent GB-274541-A (GB)
Title: Improvements appertaining to weft-stop mechanism for looms
IPC: D03D51/00
Filed: 1926-03-26
Abstract: 274,541. Smith, R. H., and Shackleton, G. W. March 26, 1926. Drawings to Specification. Picking-motions; change-box motions. - In weft-detector and pick-finder devices wherein, when the weft breaks, the picking mechanism is disengaged. and the pattern mechanism is driven reversely for two picks and then forwardly for one pick, after which the loom stops, as described in Specification 16390/11, devices are used for preventing the weft-fork mechanism from operating to stop the loom &c. during the first pick after loom stoppage, even if the weft is broken or otherwise fails to prevent the descent of the weft-fork. Specification 18780/13 is referred to.
Patent GB-175908-A (GB)
Title: Improvements in and relating to water heating apparatus
IPC: F24C13/00
Filed: 1921-03-16
Abstract: 175,908. Meister, D. J. March 16, 1920. Gas cooking-stoves;' boilers, arrangement of; hot-plates.-An annular boiler, adapted to be supported by legs 6 over the burner 8 in conjunction with which it is used, has radial tubes 9 closed at their inner end and provided with divisions 11 extending nearly to their ends to assist the circulation. Projections 7<1> support any utensil which it is desired to heat. A series of these boilers may be used, each over a burner in a gas-range and connected with an adjacent hotwater reservoir.
Patent GB-711574-A (GB)
Title: Improvements in or relating to electrical pulse generation circuits
Inventor: WRIGHT ESMOND PHILIP GOODWIN
IPC: H03M7/08
Filed: 1949-11-28
Abstract: 711,574. Digital electric calculating apparatus. STANDARD TELEPHONES & CABLES, Ltd. Nov. 24, 1950 [Nov. 28, 1949], No. 8401/52. Divided out of 711,561. Drawings to Specification. Class 106 (1) Electrical equipment for use in electric calculating apparatus &c. comprises a plurality of storage devices, a distributer having a number of outputs corresponding to respective settings of the storage devices, means for applying pulses to the distributer to step it through a predetermined cycle during which the outputs are successively energized, and means for generating successive sets of pulse trains, each occurring during a part of the predetermined cycle and being generated under the control of one of the storage devices and an output from the distributer, the duration of a pulse train controlled by a storage device being determined by the time in the predetermined cycle at which the output from the distributer which corresponds to the setting of that storage device is energized, the arrangement being such that during any one cycle of the distributer a set of pulse trains can be generated under the control of a number of the storage devices equal to the number of pulse trains in that set. The detailed description is the same as that of Specification 711,561, but the claims are different. Specification 692,415 also is referred to.
Patent GB-278595-A (GB)
IPC: B25D9/16
Filed: 1927-03-28
Abstract: 278,595. Ingersoll-Rand Co., (Assignees of Slater, F. M.). Nov. 18, 1926, [Convention date]. Valve chests and casings.-The cylinder bore is enlarged at the rear of a rock drill and contains a closing-plate G encircling the rifle bar H which is in one with a head K containing a spring pawl which engages a ratchet ring O. A valve block P containing ports Q, R which register with the cylinder-passages B, C is arranged above the head O and has mounted upon it around a sleeve e an oscillating plate valve d. The backhead V has a flange X which enters the bore F and has also ribs f spaced to form a slot which houses a spring plate h holding the parts in position.
Patent GB-1149478-A (GB)
Title: Improvements in pressure fluid actuated drill steel centralizer
Inventor: HEDSTROM HANS OLOF
IPC: E21B19/24
Filed: 1968-02-22
Abstract: 1,149,478. Percussive tools. ATLAS COPCO A.B. 22 Feb., 1968, No. 8656/68. Heading B4C. A pressurized fluid actuated drill steel centralizer comprises a cylinder 12 housing a piston 13 which is provided with a rod 14 carrying wedge-shaped surfaces 16, 17, the surfaces being adapted to co-operate with levers 19, 20 connected to guiding jaws 23 so that when the piston moves in one direction the jaws are closed and, in the other direction, the jaws are opened. The pressurized fluid, such as air or oil, is controlled by means of a valve 18.
Patent GB-1361956-A (GB)
Title: Gas turbine power plant
IPC: F02C7/36
Filed: 1973-02-22
Abstract: 1361956 Gas turbine plant GENERAL MOTORS CORP 22 Feb 1973 [20 March 1972] 8692/73 Heading F1G The invention relates to a gas turbine power plant which may either drive a power output shaft or supply air under pressure for auxiliary purposes. The plant shown is suitable for driving a road vehicle or alternatively for supplying air under pressure, for example for unloading a granular cargo. The plant comprises an air compressor 2, air pre-heater 4, combustion equipment 6 and a first turbine 7 which is connected to drive the compressor through shaft 8; gases discharging from the turbine 7 pass through line 9 to a power turbine 10, gases from which discharge through line 16 to the air pre-heater 4 and then discharge through outlet 18. The power turbine is connected through a normally-engaged clutch 12 and transmission 14 to the road wheels 15. The clutch 12 is engaged by oil pressure supplied by pump 31 through line 34 and normallyopen valve 38 to the chamber 40. The compressor-drive turbine 7 and the power turbine are normally not inter-connected but they may be inter-connected when the clutch 12 is disengaged, by opening the normally-closed valve 36 so as to allow oil under pressure to pass from the pump 31 to the chamber 47. The power turbine 10 now assists the turbine 7 to drive the compressor 2 and so air under pressure may be bled from the compressor through the duct 50 and the normallyclosed valve 51; the valve 51 is adapted to the open simultaneously with the closing of valve 38 and the opening of valve 36 by closing of a switch 44 and energization of the solenoids 54, 42 and 48. The air may alternatively be bled off from a point downstream of the air pre-heater.
Patent GB-399176-A (GB)
Title: A new or improved composition for use as a pavement for surfacing roads or the like
IPC: C04B14/36
Filed: 1932-03-23
Abstract: A composition for use as a pavement, road surface, or the like, consists of bitumen and a lava with a porous honeycomb structure obtained by heating common earth to a temperature sufficiently high to melt it and then cooling.  Earths obtained from disintegrated rocks, and from decay of vegetable material, and of almost all kinds are suitable, but earths consisting of pure minerals such as kaolin, silica, and mica are not satisfactory. The aggregate, after removal from the furnace, is crushed and milled to a fineness such that the material passes through a sieve of 200 meshes per square inch, or coarser particles may be obtained up to those just passing through a half inch ring.  The material is then heated and mixed while hot with pure bitumen, and the composition is rolled upon the surface to be treated. Specification 398,872, [Group XII], is referred to.
Patent GB-947792-A (GB)
Title: Improvements in or relating to aircraft wings
Inventor: MERRICK VERNON KEITH
IPC: B64C23/00
Filed: 1961-03-09
Abstract: 947,792. Aircraft. HAWKER SIDDELEY AVIATION Ltd. March 9, 1962 [March 9, 1961], No. 8703/61. Headings B7G and B7W An aircraft wing has one or more fans or blowers located at its trailing edge and tiltable downwardly into a position in which the fan exhaust gives a jet flap effect. The Figures show a wing 11 supporting at intervals gas turbine engines 18 in nacelles beneath the wing. Each engine supports, and drives through shafting and gearing 19, two ducted fans 12, the engine exhaust gases passing rearwardly between the fans. In normal flight, the fan axes 20 are horizontal, and the fans provide propulsion. During take-off or landing, each fan is tilted as in broken lines, Fig. 2, so that the leading edge of its duct abuts the trailing edge 13 of the wing, to produce high lift by jet reaction and the jet flap effect. The fans may have variable pitch blades, reverse pitch being used on landing for braking and for destroying the lift on the wing, thereby improving ground adhesion. An engine may drive more than two fans, or only one fan, in which ease the engine may be located in the fan within its blade ring.
Patent GB-435620-A (GB)
Title: Improvements in and relating to machine mountings
IPC: H02K5/24
Filed: 1934-03-20
Abstract: 435,620. Resilient mountings. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. March 20, 1934, No. 8721. Convention date, March 22, 1933. [Class 108 (iii)] [See also Group XXXV] The invention relates to resilient mountings for rotating machinery and the object is to minimize the transmission of noise to the foundation. It is explained in the Specification that a rotary machine, e.g. an electric motor, mounted on springs has six natural frequencies of vibration, corresponding to the following six possible movements. (1) Linear motion in a vertical direction. (2) Angular motion about an axis parallel to the shaft slightly above the centre of gravity. (3) Angular motion about an axis parallel to the shaft below the level of the springs. (4) Angular motion about an axis perpendicular to the shaft slightly above the centre of gravity. (5) Angular motion about an axis perpendicular to the shaft below the level of the springs. (6) Angular motion about a vertical axis through the centre of gravity. According to the invention, the mounting comprises stringers 17 spaced apart and arranged parallel to the axis of the machine, resilient supports at the ends of the stringers resiliently resisting movement of the machine in all directions, and means including springs engaging the stringers for urging them against the resilient supports, the stiffness of the resilient mounting being such that none of the six natural frequencies of vibration lies within the range of frequencies produced by the operation of the machine. The stringers 17 are supported at the bottom, sides and ends in boxes 18 by rubber pads 27-30, Figs. 4, 5, and are kept in position by springs 31. The length of the stringers is preferably between two and one half and three and one half times their distance apart. The motor 14 is bolted at 21 to slotted bars 19 secured to the stringers on lugs 20. To adjust the position of the motor, the bars 19 are connected by a crossbar at one end to which is rotatably secured a screw, threaded to a movable bar through which the bolts 21 extend. The Specification gives formulµ for determining the six natural frequencies of vibration, from which the dimensions of the resilient supports may be determined.
Patent GB-1472707-A (GB)
Title: Wire connectors
IPC: H01R4/22
Filed: 1975-03-03
Abstract: 1472707 Sleeve couplings I-T-E IMPERIAL CORP 3 March 1975 [4 March 1974] 8770/75 Heading H2E A screw type wire connector comprises a deformable insulating cap 11 of a resin, e.g. polypropylene or polyvinyl chloride having a bore with a broad portion 20 and a narrow portion 16 to accept a tapered wire coil 34. Three or more flattened surfaces 22, which may be formed by projections 21, in the larger bore portion 20 engage the wide end of the coil while the narrow end projects part way into the narrow bore 16. A flared skirt 28 may be provided. The cap is screwed on to a pair of wires to connect them, causing the coil 34 to impress a thread on the surfaces 22 and the cap 11 to deform outwardly. A tangential extension 36 on the wide end of the coil prevents it loosening by rotation.
Patent GB-100746-A (GB)
Title: An Improved Construction of Electromagnet for Localizing Foreign Substances which have become Embedded in the Human Body.
Inventor: BERGONIE ALBAN JEAN
IPC: A61B5/06
Filed: 1916-06-22
Abstract: 100,746. BergoniÚ, A. J. June 22, 1915, [Convention date.]. Addition to 9623/15. Drawings to Specification. Electro-magnets.-The core of an electromagnet of the kind described in the parent Specification for localizing bullets and magnetic fragments embedded in the tissues, is made up of thin sheets of iron &c. insulated from one another by paper, varnish, &c.
Patent GB-109957-A (GB)
Title: Improved Appliance, for use with Gas Stoves, for the purpose of Keeping Food Warm.
Inventor: WOODHEAD FREDERICK
IPC: F24C15/18
Filed: 1917-06-21
Abstract: 109,957. Woodhead, F. June 21, 1917. Plate-racks; hot-closets. - A food-warming accessory for gas cooking-stoves consists of a plate rack B having beneath it a second rack F or a perforated plate, which with the splash-plate E and the side plates D, and also, when fitted, a cover K, forms a hot closet which may be enclosed by a front plate H. The plates H, K are pivoted on rods c, c<1>.